Hydrochemical facies distribution, controlling mechanisms and Natural background concentrations of major pollutants in Ganga-Yamuna Interfluve Aquifer, India.

Evolution of groundwater genesis in Central Ganga Plain (CGP) is scrutinized with due consideration of hydrochemical and hydrodynamic environment within Quaternary alluviums. Wide variation in hydrochemical facies in CGP indicates a dynamic hydro-geochemical environment influenced from the seasonal rainfall, return flows, canal seepages, and anthropogenic activities. The Ca-HCO facies retaining meteoric nature is characterized by shallow water levels, high recharge rate, high hydraulic conductivity, low salinity and trace elemental load.